Pen



FIG. 1 is an upper front left perspective view of a pen showing my newdesign;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a rear elevation view thereof.

The broken line enclosing the bottom surface in FIG. 6 illustrates aboundary of the claimed design and forms no part thereof.

The ornamental design for a pen, as shown and described.